Manufacture or preparation of sulfuryl chlorid



UNITED STATES THOMAS HAROLD DUBRANS, OF OXFORD, ENGLAND, ASSIGNOB TOA.

ROBERTS & 00., LIMITED, OF LONDON, ENGLAND.

PATENT" OFFICE.

noun MANUFACTURE OR IPIIRJBIPARA'IIONv OF SUIJ'UBYL CHLO'RID. I

No Drawing.

To all whom it may concern:

Be it known that I, THOMAS HAROLD DUR- nANs, a subject of the King ofGreat Britain, residing at 245 Woodstock road, Oxford, in the county ofOxford, England, have invented new and useful Improvements in theManufacture or Preparation of Sulfuryl Chlorid, ofwhich the following isa specification.

Sulfuryl chlorid (SO,CL has been made by causing sulfur dioxidand'chlorin to react under the influence of sunlight, or ultravioletrays, or of pressure, or in the presence of camphor, charcoal, aceticacid, or acetic anhydrid, acting as catalysts, but

these methods are difiicult in manipulation and give but poor yields.

It has-now been found that withoutthe aid of light, or pressure, certainbodies, other than those aforesaid, will assist the reactionbetweensulfur dioXid and'chlorin and the production of sulfuryl chloridand have the advantages of being-neutral in action, orbutweakly acid,and-of giving better yields by a process which is very simple and easilyconducted. The bodies which are so employed in ac cordance withthisinvention to assist the reaction are esters which are compounds ofsaturated aliphatic alcohols and of saturated aliphatic acids containingcarbon, hydrogen, and oxygen, only, and also tri-phenyl phosphate,tri-cres l-phosphate, eucalyptol, benzaldehyde an benzyl acetate.

The process for the preparation of. sul- One, (or, if desired more thanone,) of the hereinbefore defined bodies, employed in accordance withthis invention, is, (or are),

placed in any suitable reaction chamber, or vessel, which is thenclosed, and the sulfur dioxid and chlorin gas in molecular proportions(11. e., in equal volumes) are passed into the said chamber, or vessel,and its con to prevent the catalyst and the formed sulfuryl chlorid fromvolatilizing, but suifi cientl high to prevent the catalyst from solidiing. The sulfuryl chlorid which is forme as the result of thereactioncan be Specification of Letters latent.

isolated by distillation or other known, or

suitable means, or, if desired, it can be used able way for theproduction of any particular compound which may be required.

What I claim is 1. The process of manufacturing sulfuryl chlorid whichcomprises the step of causing sulfur dioxid and chlorin to react in 3the presence ofan ester compound of saturated aliphatic alcohol and ofsaturated aliphatic acid containing only carbon,hydrogen and oxygen.

2. The process of manufacturing sulfuryl' chlorid which comprises thestep of causing sulfur dioxid and chlorin to react in'the presence of anester compound of saturated aliphatic alcohof andof saturated aliphaticacid containing only carbon, hydrogen and,

oxygen and in the absence ,of light or pressure.

3. The chlorid w ich comprises the stepof passing sulfur' dioxid andchlorin through an ester compoundv of saturated aliphatic alcohol and ofsaturated aliphatic acid containing only carbon, hydrogen and oxygen ina closed reaction vessel.

4L The process of manufacturing sulfuryl chlorid which comprises thestep of passing sulfur dioxid and chlorin through an ester compound ofsaturated aliphatic alcohol and I of saturated aliphatic acid containingonly furyl chlorid may be carried out as follows:

carbon, hydrogen and oxygen in a closed reaction vessel, and in theabsence of light or pressure. D 5. The process of manufacturing sulfurylchlorid which comprises the step of causing sulfur dioxid and chlorin toreact in, the presence of an ester at a'temperature below that ofvolatiliz'ation of the ester and the formed sulfuryl chlorid but abovethat at which the ester solidifies. 7

Patented J an. 4, 1921. Application'filed lay 2a, 1918. Ser1al,l0.287,106. i

rocess of manufacturing sulfuryl In testimony whereof I have signed myname to this specification in the presence of two subscribing witnesses.

